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Re: conditional statement in substitution expression

by Roy Johnson (Monsignor)
on Aug 04, 2009 at 17:16 UTC ( #785837=note: print w/ replies, xml ) Need Help??


in reply to conditional statement in substitution expression

s/\*\*([^\*]+)\*\*\s\,\s\*\*([^\*]+)\*\*(\s\,)?/(grep {index($_,'_') +>=0} $1,$2)?"**$1_($2)**":$&/ge;
This incurs the performance penalty for using $&, so you might prefer
while(<DATA>) { s/(\*\*([^\*]+)\*\*\s\,\s\*\*([^\*]+)\*\*(\s\,)?)/(grep {index($_,'_ +')>=0} $2,$3)?"**$2_($3)**":$1/ge; print; }

Caution: Contents may have been coded under pressure.

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